CN103447565A

CN103447565A - Indexable overturning chuck

Info

Publication number: CN103447565A
Application number: CN2013104253141A
Authority: CN
Inventors: 肖利; 孙朝海; 李忠洪; 李雪
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2013-09-18
Filing date: 2013-09-18
Publication date: 2013-12-18

Abstract

The invention relates to an indexable overturning chuck. A moving pressing piston and a fixed pressing piston are arranged on two sides of a tank cavity. The inner side of the moving pressing piston is communicated with a clamping oil way I, and the outer side of the moving pressing piston is communicated with a clamping oil way II. The outer end of the fixed pressing piston is connected with a rotary shaft with rectangular cross sections, and the center of the rotary shaft is connected to a limiting block. A driving rod is horizontally arranged on an indexing chuck body, and the axle of the driving rod is parallel to that of the indexing chuck body; half of the outer circumference of the driving rod is a wedge surface, and the other half of the outer circumference of the driving rod is a plane, and the transit surface is perpendicular to the wedge surface; a groove is arranged at the central line of the plane, the rotary shaft is located in the groove, and the outer surface of the limiting block is located on the plane; two end of the driving rod and the indexing chuck body are respectively provided with enclosed cavities communicated with indexing hydraulic pipes. By the aid of the indexable overturning chuck, continuous machining on parts can be realized, the indexable overturning chuck rotates at 90 degrees each time, so that positioning accuracy and machining efficiency are guaranteed.

Description

But a kind of overturning chuck of calibration

Technical field

But the present invention relates to a kind of overturning chuck of calibration, belong to a kind of jig.

Background technology

When the processing multiple-pass joint, each pipeline connector all will be processed on request, need multiple clamping, working (machining) efficiency is low, the patent that February 6, disclosed application number was 200910144355.7 in 2011, and denomination of invention is a kind of hydraulically automatic indexing chuck, this chuck can be realized the calibration of 90 °, its dividing movement is the positive and negative motion in the scope of 90 °, can only realize the processing of two stations, can't realize the processing fully of multiple-pass joint.

Summary of the invention

But the technical problem to be solved in the present invention is to provide a kind of overturning chuck of calibration, but the overturning chuck of this calibration can be realized the continuous processing of multiple-pass joint on a machine tool, overturns 90 ° at every turn, thereby has guaranteed positioning precision and working (machining) efficiency.

For overcoming the above problems, concrete technical scheme of the present invention is as follows: but a kind of overturning chuck of calibration, the centre of gyration at the index chuck body is provided with the vallecular cavity that holds workpiece, be respectively equipped with motion clamping piston and non-motion clamping piston in the both sides of vallecular cavity, excircle at the motion clamping piston is provided with sealing ring, the cavity that the sealing ring inboard forms with the index chuck body communicates with clamping the oil circuit I, and the cavity that the sealing ring outside forms with the index chuck body communicates with clamping oil circuit II; Be connected with in the outer end of non-motion clamping piston the gyroaxis that cross section is rectangle, the center of gyroaxis connects limited block simultaneously, on the index chuck body, has been horizontally disposed with drive rod, and the axis of drive rod is parallel with the axis of index chuck body; In half of drive rod excircle, be lozenges, second half is plane, and lozenges is vertical with lozenges with the transition face on plane, and the centerline on plane is provided with groove, and gyroaxis is positioned at groove, and the outer surface of limited block is positioned on plane simultaneously; The two ends of drive rod and index chuck body are respectively equipped with airtight cavity, and airtight cavity communicates with the calibration fluid pressure line respectively.

Also be provided with a cavity on described index chuck body, be provided with balance weight in this cavity, the central axes of the central shaft of balance weight and motion clamping piston, the formed confined space in the two ends of balance weight communicates with the balance oil circuit, at balance weight outside cavity, also with clamping oil circuit II, is provided with and communicates; Be provided with hydraulic control one-way valve on the balance oil circuit communicated with balance weight outside cavity, the control mouth of hydraulic control one-way valve communicates with clamping oil circuit I.

But the overturning chuck that is somebody's turn to do calibration has adopted the motion that clamps oil circuit drive clamping piston to make Workpiece clamping, the structure of recycling calibration fluid pressure line, drive rod and gyroaxis, make part to be processed realize the process of 90 degree upsets, thereby realize realizing 90 ° of continuous upsets under prerequisite that part do not dismantle, therefore improved crudy and operating efficiency.

In clamping the oil circuit II, balance weight and balance oil circuit are set, have guaranteed that clamping piston, under the state of rotating centrifugal, is still clamped workpiece, guaranteed the security of producing.

The accompanying drawing explanation

But the structural representation of the overturning chuck that Fig. 1 is calibration.

Fig. 2 is gyroaxis and drive rod relative motion step 1 schematic diagram.

Fig. 3 is gyroaxis and drive rod relative motion step 2 schematic diagram.

Fig. 4 is gyroaxis and drive rod relative motion step 3 schematic diagram.

Fig. 5 is gyroaxis and drive rod relative motion step 4 schematic diagram.

The specific embodiment

As shown in Figure 1, but a kind of overturning chuck of calibration, the centre of gyration at index chuck body 1 is provided with the vallecular cavity 10 that holds workpiece, be respectively equipped with motion clamping piston 4 and non-motion clamping piston 5 in the both sides of vallecular cavity 10, excircle at motion clamping piston 4 is provided with sealing ring, the cavity that the sealing ring inboard forms with index chuck body 1 communicates with clamping oil circuit I 11, and the cavity that the sealing ring outside forms with index chuck body 1 communicates with clamping oil circuit II 12; The gyroaxis 2 that to be connected with cross section be rectangle in the outer end of non-motion clamping piston 5, the center of gyroaxis 2 connects limited block 6 simultaneously, has been horizontally disposed with drive rod 3 on index chuck body 1, and the axis of drive rod 3 is parallel with the axis of index chuck body 1; In half of drive rod 3 excircles, it is lozenges 31, second half is plane 32, and lozenges is vertical with lozenges 31 with the transition face 36 on plane, and the centerline on plane is provided with groove 35, gyroaxis 2 is positioned at groove 35, and the outer surface of limited block 6 is positioned on plane 32 simultaneously; The two ends of drive rod 3 and index chuck body 1 are respectively equipped with airtight cavity, and airtight cavity communicates with calibration fluid pressure line 18 respectively.

Also be provided with a cavity on described index chuck body 1, be provided with balance weight 19 in this cavity, the central axes of the central shaft of balance weight 19 and motion clamping piston 4, the formed confined space in the two ends of balance weight 19 communicates with balance oil circuit 13, at balance weight 19 outside cavitys, also with clamping oil circuit II 12, is provided with and communicates; Be provided with hydraulic control one-way valve 14 on the balance oil circuit 13 communicated with balance weight 19 outside cavitys, the control mouth of hydraulic control one-way valve 14 communicates with clamping oil circuit I 11.

But the course of action that is somebody's turn to do the overturning chuck of calibration is:

1) part to be processed is put into to the vallecular cavity 10 to index chuck body 1, opened and clamp oil circuit II 12, clamping piston 4 moves upward, and part to be processed is clamped;

2), after processing, need to be overturn 90 °;

2.1) as shown in Figure 2, start calibration fluid pressure line 18, the plane of drive rod 3 32 ends are promoted to gyroaxis 2;

2.2) as shown in Figure 3, the come off square surface of gyroaxis 2 of the lozenges 31 of drive rod 3, the rectangular angular end of limited block 6 contacts with transition face 36 simultaneously, and when drive rod 3 continues to move ahead, limited block 6 drive drive rods 3 are in the interior rotation of groove 35, as shown in Figure 4;

2.3) when the rectangular surfaces of limited block is complete and fit in plane 32, drive rod 3 motion in the other direction, at first limited block 6 breaks away from planes 32, and then the end face of gyroaxis contacts with lozenges 31, as shown in Figure 5;

2.4) when the end face of gyroaxis 2 is complete and lozenges 31 is fitted fully, gyroaxis 2 drives the calibration process that part to be processed completes 90 °, simultaneously can, by shown in Fig. 2 to Fig. 5, can find out that A, the B face of limited block 6 realized the upset of 90 °;

3), after completion of processing, in the time of need to proceeding 90 degree rotation, repeat the 2.1-2.4 step;

4) in the process of processing, existence due to balanced valve and hydraulic control one-way valve, clamping piston 4 and balance weight 19 produce centrifugal force simultaneously under the rotation of index chuck seat 1, hydraulic control one-way valve 14 does not allow the liquid oil in balance weight 19 external cavities to reflux, thereby can only flow in the cavity in the clamping piston outside, therefore further clamping piston is compressed, has guaranteed production safety;

5) when the part completion of processing, clamp in oil circuit I 11 and enter liquid oil, hydraulic control one-way valve 14 is opened simultaneously, thus the liquid oil discharge in the cavity of the clamping piston outside, clamping piston 4 unclamps, and can take out the part of completion of processing.

Claims

1. but the overturning chuck of a calibration, the centre of gyration at index chuck body (1) is provided with the vallecular cavity (10) that holds workpiece, be respectively equipped with motion clamping piston (4) and non-motion clamping piston (5) in the both sides of vallecular cavity (10), it is characterized in that: the excircle at motion clamping piston (4) is provided with sealing ring, the cavity that the sealing ring inboard forms with index chuck body (1) communicates with clamping oil circuit I (11), and the cavity that the sealing ring outside forms with index chuck body (1) communicates with clamping oil circuit II (12); Be connected with the gyroaxis (2) that cross section is rectangle in the outer end of non-motion clamping piston (5), the center of gyroaxis (2) connects limited block (6) simultaneously, be horizontally disposed with drive rod (3) on index chuck body (1), the axis of drive rod (3) is parallel with the axis of index chuck body (1); In half of drive rod (3) excircle, be lozenges (31), second half is plane (32), lozenges is vertical with lozenges (31) with the transition face (36) on plane, centerline on plane is provided with groove (35), gyroaxis (2) is positioned at groove (35), and the outer surface of limited block (6) is positioned on plane (32) simultaneously; The two ends of drive rod (3) and index chuck body (1) are respectively equipped with airtight cavity, and airtight cavity communicates with calibration fluid pressure line (18) respectively.

2. but the overturning chuck of calibration as claimed in claim 1, it is characterized in that: also be provided with a cavity on described index chuck body (1), be provided with balance weight (19) in this cavity, the central axes of the central shaft of balance weight (19) and motion clamping piston (4), the formed confined space in two ends of balance weight (19) communicates with balance oil circuit (13), and in balance weight (19) outside, cavity also is provided with and communicates with clamping oil circuit II (12); Be provided with hydraulic control one-way valve (14) on the balance oil circuit (13) communicated with balance weight (19) outside cavity, the control mouth of hydraulic control one-way valve (14) communicates with clamping oil circuit I (11).